The undissolved grains of the "Homodent--1" alloy are more loosely embedded into and are more loosely connected to the matrix than the "Goodfill" grains. Air bubbles of the "Homodent--1" fillings have bigger pores than those of the "Goodfill". The microstructure of the "Goodfill" amalgam is more advantageous than that of the "Homodent--1".
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